MPLAB ? ICE 4000 User’s Guide
3.4
CONFIGURING THE COMMUNICATIONS PORT
MPLAB ICE 4000 communicates with the PC via a USB port.
1. Select Debugger>Settings and click on the Port tab.
2. Select a communications port, where ICEUSB-x are the available USB ports.
The number of available ports will depend on the configuration of individual PC’s.
Note:
Before you change the communications port in software, make sure
you have first changed it in hardware.
Click Apply to accept the setting in this tab of the Settings dialog.
3.5
SELECTING PROCESSOR POWER
MPLAB ICE 4000 allows the emulator processor chip to be powered by the emulator
pod (5V) or the target system (2.5V to 5V). The emulator defaults to Processor Power
from Emulator (system power) when first initialized.
For information on processor module power issues, please refer to the MPLAB ICE
4000 Processor Module and Device Adapter Specification .
FIGURE 3-1:
SETTINGS DIALOG – POWER TAB
3.5.1
Processor Power from Emulator (System Power)
Select the Power tab of the Debugger>Settings dialog. Under Processor Power, select
From Emulator and click Apply .
Note:
3.5.2
The emulator system cannot provide power to a target board through a
device adapter. If the device adapter is plugged into an unpowered target
board, it is not unusual to see a voltage level of 1-3V at V CC of the target
board, caused by leakage current through V CC of the device adapter.
MPLAB IDE may also have difficulty initializing the emulator when power
has not yet been applied to the target board.
Processor Power from Target Board
Select the Power tab of the Debugger>Settings dialog. Under Processor Power, select
From Target Board and click Apply .
Refer to the MPLAB ICE 4000 Processor Module and Device Adapter Specification for
processor module power requirements before configuring the system for target system
power.
DS51490A-page 16
Note:
If you use power from the target board, make sure it is always present or
the emulator will not function properly. If the device adapter is plugged into
an unpowered target board, there may still be some leakage current
through V CC of the device adapter. MPLAB IDE may also have difficulty
initializing the emulator when power has not yet been applied to the target
board.
? 2004 Microchip Technology Inc.
相关PDF资料
PMF18WE0 PROCESSOR MODULE FOR ICE4000
PMT823004F GP THREE ELEMENTS S.A. 230V T/H
PPM3-MK2 PROGRAMMER PRODUCTION ISP
PPM3A1-UPG5M UPGRADE PPM3 RAC DEVELOPMENT
PQ-MDS-PCIEXP PCI EXPANDER ADAPTOR
PQF-44 PLUG QFP 44PIN (SOLDER DOWN)
PRG18BB471MS1RB THERMISTOR
PS1600 POWER SUPPLY HOTSWAP 90-245V
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